Patents Assigned to Motorali, Inc.
  • Operational amplifier output stage driven by a single ended gain stage
    Patent number: 4409561
    Abstract: In an operational amplifier, the output of the differential first stage is applied directly to the base electrode of a voltage gain transistor which in turn drives the remainder of the operational amplifier output stage. A pair of junction field-effect-transistors in conjunction with a diode and a current mirror circuit are employed to set the quiescent voltage at the circuit output. Both pull-up and pull-down transistors are employed to achieve the correct output in response to an input at the base of the voltage gain transistor.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: October 11, 1983
    Assignee: Motorali, Inc.
    Inventor: Stuart B. Shacter